Service啓動之啓動方式和綁定方式

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.lpc.service">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:name=".Myservice"></service>
    </application>

</manifest>

MainActivity.java

package com.example.lpc.service;

import android.app.Activity;
import android.content.ComponentName;

import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Toast;


public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    //啓動服務
    public void startMyService(View v) {
        Intent intent = new Intent(this, Myservice.class);
        startService(intent);
        Toast.makeText(this, "start service", Toast.LENGTH_SHORT).show();
    }

    public void stopMyService(View v) {
        Intent intent = new Intent(this, Myservice.class);
        stopService(intent);
        Toast.makeText(this, "stop service", Toast.LENGTH_SHORT).show();
    }

    private ServiceConnection conn;

    public void bindMyService(View v) {
        Intent intent = new Intent(this, Myservice.class);
        if (conn == null) {
            conn = new ServiceConnection() {
                @Override
                public void onServiceConnected(ComponentName name, IBinder service) {
                    Log.e("ATG", "onServiceConnected");
                }

                @Override
                public void onServiceDisconnected(ComponentName name) {
                    Log.e("ATG", "onServiceDisconnected");

                }
            };//實現一個接口 注意有逗號
        } else {
            Toast.makeText(this, "已經綁定", Toast.LENGTH_SHORT).show();
        }
        bindService(intent, conn, BIND_AUTO_CREATE);
    }

    public void unbindMyService(View v) {
        if (conn != null) {
            unbindService(conn);
            conn = null;
            Toast.makeText(this, "綁定", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(this, "no綁定", Toast.LENGTH_SHORT).show();
        }

    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (conn != null) {
            unbindService(conn);
            conn = null;
        }
    }
}

MyService.java

package com.example.lpc.service;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;

/*
1. startService(intent)
	第一次調用 : -->構造方法()-->onCreate()-->onStartCommand()
	(重要)後面再調用 : -->onStartCommand()
	stopService() : -->onDestory()
2. bindService(intent, serviceConnection)
	調用 : -->構造方法()-->onCreate()-->onBind()-->onServiceConnected()
	unbindService(): (中有當前Activity與Service連接)-->onUnbind()-->onDestroy()

 */
public class Myservice extends Service {


    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Log.e("TAG", "onBind()");
        return new Binder();
    }

    @Override
    public boolean onUnbind(Intent intent) {
        Log.e("TAG", "onUnbind()");
        return super.onUnbind(intent);
    }

    @Override
    public void onCreate() {
        super.onCreate();
        Log.e("TAG","onCreate()");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d("TAG","onDestory()");

    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d("TAG","onStarteCommand()");
        return super.onStartCommand(intent, flags, startId);

    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="1. 測試啓動本地服務"
        android:textSize="25sp" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <Button
            android:id="@+id/button1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="startMyService"
            android:text="啓動服務" />

        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="stopMyService"
            android:text="停止服務" />
    </LinearLayout>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="2.  測試綁定本地服務"
        android:textSize="25sp"
        android:layout_marginTop="10dp"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="bindMyService"
            android:text="綁定服務" />

        <Button
            android:id="@+id/button2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="unbindMyService"
            android:text="解綁服務" />
    </LinearLayout>
</LinearLayout>